Long story short I need to replace my Y pipe, the issue is I'd prefer not to spend what my local Nissan dealership wants to charge me for a replacement but I can't find any aftermarket pipes with a 2.5" outlet for my exhaust. What options do i have (aside from craigslist which I've been checking often) to find an alternative without choking the pipe from 3"-2.5"?

Long story short I need to replace my Y pipe, the issue is I'd prefer not to spend what my local Nissan dealership wants to charge me for a replacement but I can't find any aftermarket pipes with a 2.5" outlet for my exhaust. What options do i have (aside from craigslist which I've been checking often) to find an alternative without choking the pipe from 3"-2.5"?

To clarify, you're looking for an OE size Y-pipe (2.5") because the Invidia is a 2.5" Y-back setup, yes?

What year car? If pre-'07 (non-HR), it pays a little to find an HR Y-Pipe. Flows a little better than the DE unit. If you can't find one and don't want to pay for a Nissan pipe, look at OE replacement Ys... like this: